Analog Devices Inc./Maxim Integrated MAX6382XR44D6

Overview

MAX6382XR44D6 from Maxim Integrated is a single-supply, active-high push-pull microprocessor supervisory circuit with factory-set 4.38V reset threshold, 560ms minimum VCC reset timeout, and 3µA supply current at +1.8V. It monitors power rails in low-voltage embedded systems and asserts RESET when VCC drops below threshold, holding it high for the full timeout after recovery. Designed for space-constrained portable electronics requiring reliable brownout protection.

For engineers reviewing the MAX6382XR44D6 datasheet, MAX6382XR44D6 pinout, MAX6382XR44D6 application, or MAX6382XR44D6 equivalent, key selection criteria include its precise 4.38V ±2.5% threshold over –40°C to +125°C, guaranteed valid output down to VCC = 1V, SC70-3 package footprint, and compatibility with manual-reset–equipped systems where active-high signaling simplifies interface logic.

Technical Context

The MAX6382XR44D6 implements a precision bandgap-based voltage comparator with ±2.5% threshold accuracy across temperature, paired with a temperature-stable RC timing network that delivers a nominal 560ms reset timeout (min). Its push-pull active-high RESET output drives directly into µP reset inputs without external pull-up components.

This variant belongs to the MAX6382 subfamily-distinguished by active-high push-pull output, absence of MR or RESET IN pins, and availability only in 3-pin SC70 and 6-pin µDFN packages. It shares the same core supervision architecture as the broader MAX6381–MAX6390 family but omits auxiliary monitoring and manual reset functionality.

Key Specifications

Pinout & Package

The MAX6382XR44D6 is housed in a 3-pin SC70 package (package code X3-2), measuring 2.0mm × 2.1mm × 0.95mm, with gull-wing leads optimized for automated assembly and thermal performance in compact layouts.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar microprocessor reset applications.

Compared with MAX6326XR44D6 and TLV803EA43DBZR, the MAX6382XR44D6 uniquely combines industrial temperature support (–40°C to +125°C), ultra-low 3µA supply current, and active-high push-pull output in a 3-pin SC70 - reducing component count, power budget, and thermal derating concerns in demanding embedded applications.

Availability

MAX6382XR44D6 is available at Aetrix Electronics and suitable for battery-powered medical sensors, industrial PLC I/O modules, automotive body control units, and smart home hub power management requiring stable component supply across extended temperature ranges and long production lifecycles.

Supply support for MAX6382XR44D6 includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.

Manufacturer

Maxim Integrated (now part of Analog Devices) is a semiconductor company specializing in high-performance analog, mixed-signal, and power management ICs for industrial, automotive, communications, and computing markets.

The MAX6381–MAX6390 product line delivers low-power, precision voltage supervisors targeting space- and power-constrained embedded systems needing deterministic reset behavior under brownout, power-up, and transient conditions.

FAQ

What is the exact reset threshold voltage of the MAX6382XR44D6?

The MAX6382XR44D6 has a factory-set nominal reset threshold of 4.38V, with guaranteed tolerance of ±2.5% over the full operating temperature range of –40°C to +125°C. This value is confirmed in the Reset Thresholds table of the datasheet (suffix "44" corresponds to 4.27V min / 4.38V nom / 4.48V max), and applies specifically to the MAX6382XR44D6 variant.

Does the MAX6382XR44D6 support manual reset functionality?

No, the MAX6382XR44D6 does not include a manual reset (MR) input. It is a dedicated single-supply supervisor with only VCC, RESET, and GND pins. Manual reset capability is present only in MAX6384/MAX6385/MAX6386/MAX6390 variants - the MAX6382XR44D6 pinout and functional description explicitly omit MR, confirming its absence in this specific part.

What package type and dimensions does the MAX6382XR44D6 use?

The MAX6382XR44D6 is supplied in a 3-pin SC70 package (package code X3-2), with body dimensions of 2.0mm × 2.1mm × 0.95mm and gull-wing lead configuration. This is verified in the Ordering Information table and Pin Configurations section, which list MAX6382XRxxDx exclusively in SC70-3 and µDFN-6 variants - the "XR" prefix denotes the SC70-3 option.

Can the MAX6382XR44D6 operate reliably below 1.8V?

Yes, the MAX6382XR44D6 operates from 1.0V to 5.5V and guarantees valid RESET output down to VCC = 1.0V. Electrical Characteristics confirm functionality at 1.0V (e.g., VOL ≤ 0.3V with 80µA sink), and the Absolute Maximum Ratings specify 1.0V as the minimum operating voltage - making it suitable for deep brownout detection in ultra-low-voltage systems.

Is the MAX6382XR44D6 pin-compatible with older Maxim reset ICs like MAX809?

No, the MAX6382XR44D6 is not pin-compatible with MAX809. While the datasheet states "pin compatible with MAX809/MAX810…" for the *family*, this refers to functional equivalence in 3-pin SOT-23 packages - not mechanical or electrical pin mapping. The MAX6382XR44D6 uses SC70-3 (VCC–RESET–GND), whereas MAX809 uses SOT-23-3 (VCC–GND–RESET), with different pin 2 assignments and no guarantee of direct replacement without PCB revision.